$//$ This method to find the total distance.

private Edge findConnectingEdge$($Vertex source, Vertex destination$)\{$

for $($Edge edge : adjacencyTable.getAdjacent$($source$.$name$))\{$

if $($edge$.$endpoint.equals$($destination$))\{$

return edge;

$\}$

$\}$

throw new IllegalStateException$("$Connecting edge not found!"$)$;

$\}$ This method Invalid for all cases, Modify it